Zipline vs Backtrader
For a new project, Backtrader is easier to install and still works on current Python. Zipline is worth it mainly for its Pipeline API and for following books that use it, through a maintained community fork.
Side by side
| Zipline | Backtrader | |
|---|---|---|
| Category | Backtesting libraries | Backtesting libraries |
| What it is | Quantopian's event-driven backtester with the Pipeline API; the original repository is no longer maintained. | Event-driven Python backtesting and live-trading library with a large community. |
| Best for | Following older tutorials and books that use it, and cross-sectional equity factor research. | Learning backtesting, strategies with complex order logic, and porting rule-based systems such as MT4/MT5 Expert Advisors. |
| Language | Python | Python |
| License | Apache-2.0 | GPL-3.0 |
| GitHub stars | 20.2k | 23.7k |
| Last commit | 2024-02-13 | 2024-08-19 |
| Latest release | — | — |
| Status | Inactive | Inactive |
GitHub statistics as of 2026-11-10. Status: active = commits in the last 90 days, slowing = in the last year, inactive = older, archived = read-only.
Strengths · Limitations
Zipline
Strengths
- Pipeline API for factor research
- Realistic daily equity simulation
- Lots of historical learning material
Limitations
- Original repository unmaintained; installation is painful
- Data bundles need setup work
- Not suited to crypto or forex
Backtrader
Strengths
- Realistic event-driven simulation: orders, stops, partial fills, commissions
- Huge amount of examples and community answers
- Multiple data feeds and timeframes in one strategy
Limitations
- Slow for large parameter sweeps compared with vectorized libraries
- No longer actively developed; plotting can break with newer Matplotlib
- Live-trading brokers are dated
Which one to choose
For a new project, Backtrader is easier to install and still works on current Python. Zipline is worth it mainly for its Pipeline API and for following books that use it, through a maintained community fork.
All frameworks · Descriptions are our own summary and may lag behind each project's documentation. Check the project's license before using it in a product. Nothing here is investment advice.